The proper alignment of a unit is an expertise developed with time and experience. The principles of the alignment are fairly simple, but in practice, strong experience and use of proper methods is a big advantage for the client, since it can eliminate unnecessary steps and put the emphasis on critical items.
Visual inspection of components
A visual inspection of all the components is normally done and documented during major overhauls.
Hydro Expertise can also do specific inspection on shaft journals, bearings, rotor and stator.
For specific components of old hydrogenerators, Hydro Expertise will recommend that NDT testing be done by a specialised firm to ensure that there are no cracks in the material